L10016RMA3 True RMS Ammeter by Laurel Electronics

Model L10016RMA3 includes:

DPM with green LEDs

Universal 85-264 Vac power

No relays

4-20 mA, 0-10V, -10 to +10V analog output

USB-to-RS485 converter

Model L10016RMA3 by Laurel Electronics is a 60,000-count digital panel meter with exceptional performance at half the price of a bench top meter. It can measure true RMS curreent or voltage of AC signals where there is considerable distortion of the waveform, such as rectifier outputs or waveforms chopped by an SCR, TRIAC or transistor circuit. Model L10016RMA3 is configured for Universal 85-264 Vac power, No relays, 4-20 mA, 0-10V, -10 to +10V analog output, and USB-to-RS485 converter.

True RMS readings in 0-16 ms after completion of one input signal cycle allow anomalies to be detected and alarmed before they become expensive problems. Fast on/off control and alarm can be achieved with optional dual or quad relays, either contact or solid state. The meter can also capture peak and valley readings for each 50/60 Hz line cycle.

Accuracy is 0.1% of full scale for signals from DC to 10 kHz and signal amplitudes down to 0.1% of full scale. The crest factor (Vp / Vrms) is 3.0 at full-scale Vrms of 20,000 counts and a Vp of 60,000 counts. AC or DC coupling is jumper selectable on the signal conditioner board. AC coupling accommodates signals from 10 Hz to 10 kHz and is suitable for applications such as measuring AC ripple on a DC power supply.

Use with current Transformers. High common mode rejection allows stable readings with current shunts located on the high side of the line. Five amp input capability allows the output of 5A current transformers to be applied directly to the meter, with no need for a stepdown transformer.